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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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#ifndef _UAPI_LINUX_BTRFS_H#define _UAPI_LINUX_BTRFS_H
#ifdef __cplusplusextern "C" {#endif
#include <linux/types.h>#include <linux/ioctl.h>#include <linux/fs.h>
#define BTRFS_IOCTL_MAGIC 0x94#define BTRFS_VOL_NAME_MAX 255#define BTRFS_LABEL_SIZE 256
/* this should be 4k */#define BTRFS_PATH_NAME_MAX 4087struct btrfs_ioctl_vol_args { __s64 fd; char name[BTRFS_PATH_NAME_MAX + 1];};
#define BTRFS_DEVICE_PATH_NAME_MAX 1024#define BTRFS_SUBVOL_NAME_MAX 4039
#ifndef __KERNEL__/* Deprecated since 5.7 */# define BTRFS_SUBVOL_CREATE_ASYNC (1ULL << 0)#endif#define BTRFS_SUBVOL_RDONLY (1ULL << 1)#define BTRFS_SUBVOL_QGROUP_INHERIT (1ULL << 2)
#define BTRFS_DEVICE_SPEC_BY_ID (1ULL << 3)
#define BTRFS_SUBVOL_SPEC_BY_ID (1ULL << 4)
#define BTRFS_VOL_ARG_V2_FLAGS_SUPPORTED \ (BTRFS_SUBVOL_RDONLY | \ BTRFS_SUBVOL_QGROUP_INHERIT | \ BTRFS_DEVICE_SPEC_BY_ID | \ BTRFS_SUBVOL_SPEC_BY_ID)
#define BTRFS_FSID_SIZE 16#define BTRFS_UUID_SIZE 16#define BTRFS_UUID_UNPARSED_SIZE 37
/* * flags definition for qgroup limits * * Used by: * struct btrfs_qgroup_limit.flags * struct btrfs_qgroup_limit_item.flags */#define BTRFS_QGROUP_LIMIT_MAX_RFER (1ULL << 0)#define BTRFS_QGROUP_LIMIT_MAX_EXCL (1ULL << 1)#define BTRFS_QGROUP_LIMIT_RSV_RFER (1ULL << 2)#define BTRFS_QGROUP_LIMIT_RSV_EXCL (1ULL << 3)#define BTRFS_QGROUP_LIMIT_RFER_CMPR (1ULL << 4)#define BTRFS_QGROUP_LIMIT_EXCL_CMPR (1ULL << 5)
struct btrfs_qgroup_limit { __u64 flags; __u64 max_rfer; __u64 max_excl; __u64 rsv_rfer; __u64 rsv_excl;};
/* * flags definition for qgroup inheritance * * Used by: * struct btrfs_qgroup_inherit.flags */#define BTRFS_QGROUP_INHERIT_SET_LIMITS (1ULL << 0)#define BTRFS_QGROUP_INHERIT_FLAGS_SUPP (BTRFS_QGROUP_INHERIT_SET_LIMITS)
struct btrfs_qgroup_inherit { __u64 flags; __u64 num_qgroups; __u64 num_ref_copies; __u64 num_excl_copies; struct btrfs_qgroup_limit lim; __u64 qgroups[];};
struct btrfs_ioctl_qgroup_limit_args { __u64 qgroupid; struct btrfs_qgroup_limit lim;};
/* * Arguments for specification of subvolumes or devices, supporting by-name or * by-id and flags * * The set of supported flags depends on the ioctl * * BTRFS_SUBVOL_RDONLY is also provided/consumed by the following ioctls: * - BTRFS_IOC_SUBVOL_GETFLAGS * - BTRFS_IOC_SUBVOL_SETFLAGS */
/* Supported flags for BTRFS_IOC_RM_DEV_V2 */#define BTRFS_DEVICE_REMOVE_ARGS_MASK \ (BTRFS_DEVICE_SPEC_BY_ID)
/* Supported flags for BTRFS_IOC_SNAP_CREATE_V2 and BTRFS_IOC_SUBVOL_CREATE_V2 */#define BTRFS_SUBVOL_CREATE_ARGS_MASK \ (BTRFS_SUBVOL_RDONLY | \ BTRFS_SUBVOL_QGROUP_INHERIT)
/* Supported flags for BTRFS_IOC_SNAP_DESTROY_V2 */#define BTRFS_SUBVOL_DELETE_ARGS_MASK \ (BTRFS_SUBVOL_SPEC_BY_ID)
struct btrfs_ioctl_vol_args_v2 { __s64 fd; __u64 transid; __u64 flags; union { struct { __u64 size; struct btrfs_qgroup_inherit __user *qgroup_inherit; }; __u64 unused[4]; }; union { char name[BTRFS_SUBVOL_NAME_MAX + 1]; __u64 devid; __u64 subvolid; };};
/* * structure to report errors and progress to userspace, either as a * result of a finished scrub, a canceled scrub or a progress inquiry */struct btrfs_scrub_progress { __u64 data_extents_scrubbed; /* # of data extents scrubbed */ __u64 tree_extents_scrubbed; /* # of tree extents scrubbed */ __u64 data_bytes_scrubbed; /* # of data bytes scrubbed */ __u64 tree_bytes_scrubbed; /* # of tree bytes scrubbed */ __u64 read_errors; /* # of read errors encountered (EIO) */ __u64 csum_errors; /* # of failed csum checks */ __u64 verify_errors; /* # of occurrences, where the metadata * of a tree block did not match the * expected values, like generation or * logical */ __u64 no_csum; /* # of 4k data block for which no csum * is present, probably the result of * data written with nodatasum */ __u64 csum_discards; /* # of csum for which no data was found * in the extent tree. */ __u64 super_errors; /* # of bad super blocks encountered */ __u64 malloc_errors; /* # of internal kmalloc errors. These * will likely cause an incomplete * scrub */ __u64 uncorrectable_errors; /* # of errors where either no intact * copy was found or the writeback * failed */ __u64 corrected_errors; /* # of errors corrected */ __u64 last_physical; /* last physical address scrubbed. In * case a scrub was aborted, this can * be used to restart the scrub */ __u64 unverified_errors; /* # of occurrences where a read for a * full (64k) bio failed, but the re- * check succeeded for each 4k piece. * Intermittent error. */};
#define BTRFS_SCRUB_READONLY 1#define BTRFS_SCRUB_SUPPORTED_FLAGS (BTRFS_SCRUB_READONLY)struct btrfs_ioctl_scrub_args { __u64 devid; /* in */ __u64 start; /* in */ __u64 end; /* in */ __u64 flags; /* in */ struct btrfs_scrub_progress progress; /* out */ /* pad to 1k */ __u64 unused[(1024-32-sizeof(struct btrfs_scrub_progress))/8];};
#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_ALWAYS 0#define BTRFS_IOCTL_DEV_REPLACE_CONT_READING_FROM_SRCDEV_MODE_AVOID 1struct btrfs_ioctl_dev_replace_start_params { __u64 srcdevid; /* in, if 0, use srcdev_name instead */ __u64 cont_reading_from_srcdev_mode; /* in, see #define * above */ __u8 srcdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */ __u8 tgtdev_name[BTRFS_DEVICE_PATH_NAME_MAX + 1]; /* in */};
#define BTRFS_IOCTL_DEV_REPLACE_STATE_NEVER_STARTED 0#define BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED 1#define BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED 2#define BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED 3#define BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED 4struct btrfs_ioctl_dev_replace_status_params { __u64 replace_state; /* out, see #define above */ __u64 progress_1000; /* out, 0 <= x <= 1000 */ __u64 time_started; /* out, seconds since 1-Jan-1970 */ __u64 time_stopped; /* out, seconds since 1-Jan-1970 */ __u64 num_write_errors; /* out */ __u64 num_uncorrectable_read_errors; /* out */};
#define BTRFS_IOCTL_DEV_REPLACE_CMD_START 0#define BTRFS_IOCTL_DEV_REPLACE_CMD_STATUS 1#define BTRFS_IOCTL_DEV_REPLACE_CMD_CANCEL 2#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NO_ERROR 0#define BTRFS_IOCTL_DEV_REPLACE_RESULT_NOT_STARTED 1#define BTRFS_IOCTL_DEV_REPLACE_RESULT_ALREADY_STARTED 2#define BTRFS_IOCTL_DEV_REPLACE_RESULT_SCRUB_INPROGRESS 3struct btrfs_ioctl_dev_replace_args { __u64 cmd; /* in */ __u64 result; /* out */
union { struct btrfs_ioctl_dev_replace_start_params start; struct btrfs_ioctl_dev_replace_status_params status; }; /* in/out */
__u64 spare[64];};
struct btrfs_ioctl_dev_info_args { __u64 devid; /* in/out */ __u8 uuid[BTRFS_UUID_SIZE]; /* in/out */ __u64 bytes_used; /* out */ __u64 total_bytes; /* out */ /* * Optional, out. * * Showing the fsid of the device, allowing user space to check if this * device is a seeding one. * * Introduced in v6.3, thus user space still needs to check if kernel * changed this value. Older kernel will not touch the values here. */ __u8 fsid[BTRFS_UUID_SIZE]; __u64 unused[377]; /* pad to 4k */ __u8 path[BTRFS_DEVICE_PATH_NAME_MAX]; /* out */};
/* * Retrieve information about the filesystem */
/* Request information about checksum type and size */#define BTRFS_FS_INFO_FLAG_CSUM_INFO (1 << 0)
/* Request information about filesystem generation */#define BTRFS_FS_INFO_FLAG_GENERATION (1 << 1)/* Request information about filesystem metadata UUID */#define BTRFS_FS_INFO_FLAG_METADATA_UUID (1 << 2)
struct btrfs_ioctl_fs_info_args { __u64 max_id; /* out */ __u64 num_devices; /* out */ __u8 fsid[BTRFS_FSID_SIZE]; /* out */ __u32 nodesize; /* out */ __u32 sectorsize; /* out */ __u32 clone_alignment; /* out */ /* See BTRFS_FS_INFO_FLAG_* */ __u16 csum_type; /* out */ __u16 csum_size; /* out */ __u64 flags; /* in/out */ __u64 generation; /* out */ __u8 metadata_uuid[BTRFS_FSID_SIZE]; /* out */ __u8 reserved[944]; /* pad to 1k */};
/* * feature flags * * Used by: * struct btrfs_ioctl_feature_flags */#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE (1ULL << 0)/* * Older kernels (< 4.9) on big-endian systems produced broken free space tree * bitmaps, and btrfs-progs also used to corrupt the free space tree (versions * < 4.7.3). If this bit is clear, then the free space tree cannot be trusted. * btrfs-progs can also intentionally clear this bit to ask the kernel to * rebuild the free space tree, however this might not work on older kernels * that do not know about this bit. If not sure, clear the cache manually on * first mount when booting older kernel versions. */#define BTRFS_FEATURE_COMPAT_RO_FREE_SPACE_TREE_VALID (1ULL << 1)#define BTRFS_FEATURE_COMPAT_RO_VERITY (1ULL << 2)
/* * Put all block group items into a dedicated block group tree, greatly * reducing mount time for large filesystem due to better locality. */#define BTRFS_FEATURE_COMPAT_RO_BLOCK_GROUP_TREE (1ULL << 3)
#define BTRFS_FEATURE_INCOMPAT_MIXED_BACKREF (1ULL << 0)#define BTRFS_FEATURE_INCOMPAT_DEFAULT_SUBVOL (1ULL << 1)#define BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS (1ULL << 2)#define BTRFS_FEATURE_INCOMPAT_COMPRESS_LZO (1ULL << 3)#define BTRFS_FEATURE_INCOMPAT_COMPRESS_ZSTD (1ULL << 4)
/* * older kernels tried to do bigger metadata blocks, but the * code was pretty buggy. Lets not let them try anymore. */#define BTRFS_FEATURE_INCOMPAT_BIG_METADATA (1ULL << 5)
#define BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF (1ULL << 6)#define BTRFS_FEATURE_INCOMPAT_RAID56 (1ULL << 7)#define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8)#define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9)#define BTRFS_FEATURE_INCOMPAT_METADATA_UUID (1ULL << 10)#define BTRFS_FEATURE_INCOMPAT_RAID1C34 (1ULL << 11)#define BTRFS_FEATURE_INCOMPAT_ZONED (1ULL << 12)#define BTRFS_FEATURE_INCOMPAT_EXTENT_TREE_V2 (1ULL << 13)#define BTRFS_FEATURE_INCOMPAT_RAID_STRIPE_TREE (1ULL << 14)#define BTRFS_FEATURE_INCOMPAT_SIMPLE_QUOTA (1ULL << 16)#define BTRFS_FEATURE_INCOMPAT_REMAP_TREE (1ULL << 17)
struct btrfs_ioctl_feature_flags { __u64 compat_flags; __u64 compat_ro_flags; __u64 incompat_flags;};
/* balance control ioctl modes */#define BTRFS_BALANCE_CTL_PAUSE 1#define BTRFS_BALANCE_CTL_CANCEL 2
/* * this is packed, because it should be exactly the same as its disk * byte order counterpart (struct btrfs_disk_balance_args) */struct btrfs_balance_args { __u64 profiles;
/* * usage filter * BTRFS_BALANCE_ARGS_USAGE with a single value means '0..N' * BTRFS_BALANCE_ARGS_USAGE_RANGE - range syntax, min..max */ union { __u64 usage; struct { __u32 usage_min; __u32 usage_max; }; }; __u64 devid; __u64 pstart; __u64 pend; __u64 vstart; __u64 vend;
__u64 target;
__u64 flags;
/* * BTRFS_BALANCE_ARGS_LIMIT with value 'limit' * BTRFS_BALANCE_ARGS_LIMIT_RANGE - the extend version can use minimum * and maximum */ union { __u64 limit; /* limit number of processed chunks */ struct { __u32 limit_min; __u32 limit_max; }; };
/* * Process chunks that cross stripes_min..stripes_max devices, * BTRFS_BALANCE_ARGS_STRIPES_RANGE */ __u32 stripes_min; __u32 stripes_max;
__u64 unused[6];} __attribute__ ((__packed__));
/* report balance progress to userspace */struct btrfs_balance_progress { __u64 expected; /* estimated # of chunks that will be * relocated to fulfill the request */ __u64 considered; /* # of chunks we have considered so far */ __u64 completed; /* # of chunks relocated so far */};
/* * flags definition for balance * * Restriper's general type filter * * Used by: * btrfs_ioctl_balance_args.flags * btrfs_balance_control.flags (internal) */#define BTRFS_BALANCE_DATA (1ULL << 0)#define BTRFS_BALANCE_SYSTEM (1ULL << 1)#define BTRFS_BALANCE_METADATA (1ULL << 2)
#define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \ BTRFS_BALANCE_SYSTEM | \ BTRFS_BALANCE_METADATA)
#define BTRFS_BALANCE_FORCE (1ULL << 3)#define BTRFS_BALANCE_RESUME (1ULL << 4)
/* * flags definitions for per-type balance args * * Balance filters * * Used by: * struct btrfs_balance_args */#define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0)#define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1)#define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2)#define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3)#define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4)#define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5)#define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6)#define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7)#define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10)
#define BTRFS_BALANCE_ARGS_MASK \ (BTRFS_BALANCE_ARGS_PROFILES | \ BTRFS_BALANCE_ARGS_USAGE | \ BTRFS_BALANCE_ARGS_DEVID | \ BTRFS_BALANCE_ARGS_DRANGE | \ BTRFS_BALANCE_ARGS_VRANGE | \ BTRFS_BALANCE_ARGS_LIMIT | \ BTRFS_BALANCE_ARGS_LIMIT_RANGE | \ BTRFS_BALANCE_ARGS_STRIPES_RANGE | \ BTRFS_BALANCE_ARGS_USAGE_RANGE)
/* * Profile changing flags. When SOFT is set we won't relocate chunk if * it already has the target profile (even though it may be * half-filled). */#define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8)#define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9)
/* * flags definition for balance state * * Used by: * struct btrfs_ioctl_balance_args.state */#define BTRFS_BALANCE_STATE_RUNNING (1ULL << 0)#define BTRFS_BALANCE_STATE_PAUSE_REQ (1ULL << 1)#define BTRFS_BALANCE_STATE_CANCEL_REQ (1ULL << 2)
struct btrfs_ioctl_balance_args { __u64 flags; /* in/out */ __u64 state; /* out */
struct btrfs_balance_args data; /* in/out */ struct btrfs_balance_args meta; /* in/out */ struct btrfs_balance_args sys; /* in/out */
struct btrfs_balance_progress stat; /* out */
__u64 unused[72]; /* pad to 1k */};
#define BTRFS_INO_LOOKUP_PATH_MAX 4080struct btrfs_ioctl_ino_lookup_args { __u64 treeid; __u64 objectid; char name[BTRFS_INO_LOOKUP_PATH_MAX];};
#define BTRFS_INO_LOOKUP_USER_PATH_MAX (4080 - BTRFS_VOL_NAME_MAX - 1)struct btrfs_ioctl_ino_lookup_user_args { /* in, inode number containing the subvolume of 'subvolid' */ __u64 dirid; /* in */ __u64 treeid; /* out, name of the subvolume of 'treeid' */ char name[BTRFS_VOL_NAME_MAX + 1]; /* * out, constructed path from the directory with which the ioctl is * called to dirid */ char path[BTRFS_INO_LOOKUP_USER_PATH_MAX];};
/* Search criteria for the btrfs SEARCH ioctl family. */struct btrfs_ioctl_search_key { /* * The tree we're searching in. 1 is the tree of tree roots, 2 is the * extent tree, etc... * * A special tree_id value of 0 will cause a search in the subvolume * tree that the inode which is passed to the ioctl is part of. */ __u64 tree_id; /* in */
/* * When doing a tree search, we're actually taking a slice from a * linear search space of 136-bit keys. * * A full 136-bit tree key is composed as: * (objectid << 72) + (type << 64) + offset * * The individual min and max values for objectid, type and offset * define the min_key and max_key values for the search range. All * metadata items with a key in the interval [min_key, max_key] will be * returned. * * Additionally, we can filter the items returned on transaction id of * the metadata block they're stored in by specifying a transid range. * Be aware that this transaction id only denotes when the metadata * page that currently contains the item got written the last time as * result of a COW operation. The number does not have any meaning * related to the transaction in which an individual item that is being * returned was created or changed. */ __u64 min_objectid; /* in */ __u64 max_objectid; /* in */ __u64 min_offset; /* in */ __u64 max_offset; /* in */ __u64 min_transid; /* in */ __u64 max_transid; /* in */ __u32 min_type; /* in */ __u32 max_type; /* in */
/* * input: The maximum amount of results desired. * output: The actual amount of items returned, restricted by any of: * - reaching the upper bound of the search range * - reaching the input nr_items amount of items * - completely filling the supplied memory buffer */ __u32 nr_items; /* in/out */
/* align to 64 bits */ __u32 unused;
/* some extra for later */ __u64 unused1; __u64 unused2; __u64 unused3; __u64 unused4;};
struct btrfs_ioctl_search_header { __u64 transid; __u64 objectid; __u64 offset; __u32 type; __u32 len;} __attribute__ ((__may_alias__));
#define BTRFS_SEARCH_ARGS_BUFSIZE (4096 - sizeof(struct btrfs_ioctl_search_key))/* * the buf is an array of search headers where * each header is followed by the actual item * the type field is expanded to 32 bits for alignment */struct btrfs_ioctl_search_args { struct btrfs_ioctl_search_key key; char buf[BTRFS_SEARCH_ARGS_BUFSIZE];};
/* * Extended version of TREE_SEARCH ioctl that can return more than 4k of bytes. * The allocated size of the buffer is set in buf_size. */struct btrfs_ioctl_search_args_v2 { struct btrfs_ioctl_search_key key; /* in/out - search parameters */ __u64 buf_size; /* in - size of buffer * out - on EOVERFLOW: needed size * to store item */ __u8 buf[]; /* out - found items */};
/* With a @src_length of zero, the range from @src_offset->EOF is cloned! */struct btrfs_ioctl_clone_range_args { __s64 src_fd; __u64 src_offset, src_length; __u64 dest_offset;};
/* * flags definition for the defrag range ioctl * * Used by: * struct btrfs_ioctl_defrag_range_args.flags */#define BTRFS_DEFRAG_RANGE_COMPRESS 1#define BTRFS_DEFRAG_RANGE_START_IO 2#define BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL 4/* Request no compression on the range (uncompress if necessary). */#define BTRFS_DEFRAG_RANGE_NOCOMPRESS 8#define BTRFS_DEFRAG_RANGE_FLAGS_SUPP (BTRFS_DEFRAG_RANGE_COMPRESS | \ BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL | \ BTRFS_DEFRAG_RANGE_NOCOMPRESS | \ BTRFS_DEFRAG_RANGE_START_IO)
struct btrfs_ioctl_defrag_range_args { /* start of the defrag operation */ __u64 start;
/* number of bytes to defrag, use (u64)-1 to say all */ __u64 len;
/* * flags for the operation, which can include turning * on compression for this one defrag */ __u64 flags;
/* * any extent bigger than this will be considered * already defragged. Use 0 to take the kernel default * Use 1 to say every single extent must be rewritten */ __u32 extent_thresh;
/* * which compression method to use if turning on compression * for this defrag operation. If unspecified, zlib will be * used. If compression level is also being specified, set the * BTRFS_DEFRAG_RANGE_COMPRESS_LEVEL flag and fill the compress * member structure instead of the compress_type field. */ union { __u32 compress_type; struct { __u8 type; __s8 level; } compress; };
/* spare for later */ __u32 unused[4];};
#define BTRFS_SAME_DATA_DIFFERS 1/* For extent-same ioctl */struct btrfs_ioctl_same_extent_info { __s64 fd; /* in - destination file */ __u64 logical_offset; /* in - start of extent in destination */ __u64 bytes_deduped; /* out - total # of bytes we were able * to dedupe from this file */ /* status of this dedupe operation: * 0 if dedup succeeds * < 0 for error * == BTRFS_SAME_DATA_DIFFERS if data differs */ __s32 status; /* out - see above description */ __u32 reserved;};
struct btrfs_ioctl_same_args { __u64 logical_offset; /* in - start of extent in source */ __u64 length; /* in - length of extent */ __u16 dest_count; /* in - total elements in info array */ __u16 reserved1; __u32 reserved2; struct btrfs_ioctl_same_extent_info info[];};
struct btrfs_ioctl_space_info { __u64 flags; __u64 total_bytes; __u64 used_bytes;};
struct btrfs_ioctl_space_args { __u64 space_slots; __u64 total_spaces; struct btrfs_ioctl_space_info spaces[];};
struct btrfs_data_container { __u32 bytes_left; /* out -- bytes not needed to deliver output */ __u32 bytes_missing; /* out -- additional bytes needed for result */ __u32 elem_cnt; /* out */ __u32 elem_missed; /* out */ __u64 val[]; /* out */};
struct btrfs_ioctl_ino_path_args { __u64 inum; /* in */ __u64 size; /* in */ __u64 reserved[4]; /* struct btrfs_data_container *fspath; out */ __u64 fspath; /* out */};
struct btrfs_ioctl_logical_ino_args { __u64 logical; /* in */ __u64 size; /* in */ __u64 reserved[3]; /* must be 0 for now */ __u64 flags; /* in, v2 only */ /* struct btrfs_data_container *inodes; out */ __u64 inodes;};
/* * Return every ref to the extent, not just those containing logical block. * Requires logical == extent bytenr. */#define BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET (1ULL << 0)
enum btrfs_dev_stat_values { /* disk I/O failure stats */ BTRFS_DEV_STAT_WRITE_ERRS, /* EIO or EREMOTEIO from lower layers */ BTRFS_DEV_STAT_READ_ERRS, /* EIO or EREMOTEIO from lower layers */ BTRFS_DEV_STAT_FLUSH_ERRS, /* EIO or EREMOTEIO from lower layers */
/* stats for indirect indications for I/O failures */ BTRFS_DEV_STAT_CORRUPTION_ERRS, /* checksum error, bytenr error or * contents is illegal: this is an * indication that the block was damaged * during read or write, or written to * wrong location or read from wrong * location */ BTRFS_DEV_STAT_GENERATION_ERRS, /* an indication that blocks have not * been written */
BTRFS_DEV_STAT_VALUES_MAX};
/* Reset statistics after reading; needs SYS_ADMIN capability */#define BTRFS_DEV_STATS_RESET (1ULL << 0)
struct btrfs_ioctl_get_dev_stats { __u64 devid; /* in */ __u64 nr_items; /* in/out */ __u64 flags; /* in/out */
/* out values: */ __u64 values[BTRFS_DEV_STAT_VALUES_MAX];
/* * This pads the struct to 1032 bytes. It was originally meant to pad to * 1024 bytes, but when adding the flags field, the padding calculation * was not adjusted. */ __u64 unused[128 - 2 - BTRFS_DEV_STAT_VALUES_MAX];};
#define BTRFS_QUOTA_CTL_ENABLE 1#define BTRFS_QUOTA_CTL_DISABLE 2#define BTRFS_QUOTA_CTL_RESCAN__NOTUSED 3#define BTRFS_QUOTA_CTL_ENABLE_SIMPLE_QUOTA 4struct btrfs_ioctl_quota_ctl_args { __u64 cmd; __u64 status;};
struct btrfs_ioctl_quota_rescan_args { __u64 flags; __u64 progress; __u64 reserved[6];};
struct btrfs_ioctl_qgroup_assign_args { __u64 assign; __u64 src; __u64 dst;};
struct btrfs_ioctl_qgroup_create_args { __u64 create; __u64 qgroupid;};struct btrfs_ioctl_timespec { __u64 sec; __u32 nsec;};
struct btrfs_ioctl_received_subvol_args { char uuid[BTRFS_UUID_SIZE]; /* in */ __u64 stransid; /* in */ __u64 rtransid; /* out */ struct btrfs_ioctl_timespec stime; /* in */ struct btrfs_ioctl_timespec rtime; /* out */ __u64 flags; /* in */ __u64 reserved[16]; /* in */};
/* * Caller doesn't want file data in the send stream, even if the * search of clone sources doesn't find an extent. UPDATE_EXTENT * commands will be sent instead of WRITE commands. */#define BTRFS_SEND_FLAG_NO_FILE_DATA 0x1
/* * Do not add the leading stream header. Used when multiple snapshots * are sent back to back. */#define BTRFS_SEND_FLAG_OMIT_STREAM_HEADER 0x2
/* * Omit the command at the end of the stream that indicated the end * of the stream. This option is used when multiple snapshots are * sent back to back. */#define BTRFS_SEND_FLAG_OMIT_END_CMD 0x4
/* * Read the protocol version in the structure */#define BTRFS_SEND_FLAG_VERSION 0x8
/* * Send compressed data using the ENCODED_WRITE command instead of decompressing * the data and sending it with the WRITE command. This requires protocol * version >= 2. */#define BTRFS_SEND_FLAG_COMPRESSED 0x10
#define BTRFS_SEND_FLAG_MASK \ (BTRFS_SEND_FLAG_NO_FILE_DATA | \ BTRFS_SEND_FLAG_OMIT_STREAM_HEADER | \ BTRFS_SEND_FLAG_OMIT_END_CMD | \ BTRFS_SEND_FLAG_VERSION | \ BTRFS_SEND_FLAG_COMPRESSED)
struct btrfs_ioctl_send_args { __s64 send_fd; /* in */ __u64 clone_sources_count; /* in */ __u64 __user *clone_sources; /* in */ __u64 parent_root; /* in */ __u64 flags; /* in */ __u32 version; /* in */ __u8 reserved[28]; /* in */};
/* * Information about a fs tree root. * * All items are filled by the ioctl */struct btrfs_ioctl_get_subvol_info_args { /* Id of this subvolume */ __u64 treeid;
/* Name of this subvolume, used to get the real name at mount point */ char name[BTRFS_VOL_NAME_MAX + 1];
/* * Id of the subvolume which contains this subvolume. * Zero for top-level subvolume or a deleted subvolume. */ __u64 parent_id;
/* * Inode number of the directory which contains this subvolume. * Zero for top-level subvolume or a deleted subvolume */ __u64 dirid;
/* Latest transaction id of this subvolume */ __u64 generation;
/* Flags of this subvolume */ __u64 flags;
/* UUID of this subvolume */ __u8 uuid[BTRFS_UUID_SIZE];
/* * UUID of the subvolume of which this subvolume is a snapshot. * All zero for a non-snapshot subvolume. */ __u8 parent_uuid[BTRFS_UUID_SIZE];
/* * UUID of the subvolume from which this subvolume was received. * All zero for non-received subvolume. */ __u8 received_uuid[BTRFS_UUID_SIZE];
/* Transaction id indicating when change/create/send/receive happened */ __u64 ctransid; __u64 otransid; __u64 stransid; __u64 rtransid; /* Time corresponding to c/o/s/rtransid */ struct btrfs_ioctl_timespec ctime; struct btrfs_ioctl_timespec otime; struct btrfs_ioctl_timespec stime; struct btrfs_ioctl_timespec rtime;
/* Must be zero */ __u64 reserved[8];};
#define BTRFS_MAX_ROOTREF_BUFFER_NUM 255struct btrfs_ioctl_get_subvol_rootref_args { /* in/out, minimum id of rootref's treeid to be searched */ __u64 min_treeid;
/* out */ struct { __u64 treeid; __u64 dirid; } rootref[BTRFS_MAX_ROOTREF_BUFFER_NUM];
/* out, number of found items */ __u8 num_items; __u8 align[7];};
/* * Data and metadata for an encoded read or write. * * Encoded I/O bypasses any encoding automatically done by the filesystem (e.g., * compression). This can be used to read the compressed contents of a file or * write pre-compressed data directly to a file. * * BTRFS_IOC_ENCODED_READ and BTRFS_IOC_ENCODED_WRITE are essentially * preadv/pwritev with additional metadata about how the data is encoded and the * size of the unencoded data. * * BTRFS_IOC_ENCODED_READ fills the given iovecs with the encoded data, fills * the metadata fields, and returns the size of the encoded data. It reads one * extent per call. It can also read data which is not encoded. * * BTRFS_IOC_ENCODED_WRITE uses the metadata fields, writes the encoded data * from the iovecs, and returns the size of the encoded data. Note that the * encoded data is not validated when it is written; if it is not valid (e.g., * it cannot be decompressed), then a subsequent read may return an error. * * Since the filesystem page cache contains decoded data, encoded I/O bypasses * the page cache. Encoded I/O requires CAP_SYS_ADMIN. */struct btrfs_ioctl_encoded_io_args { /* Input parameters for both reads and writes. */
/* * iovecs containing encoded data. * * For reads, if the size of the encoded data is larger than the sum of * iov[n].iov_len for 0 <= n < iovcnt, then the ioctl fails with * ENOBUFS. * * For writes, the size of the encoded data is the sum of iov[n].iov_len * for 0 <= n < iovcnt. This must be less than 128 KiB (this limit may * increase in the future). This must also be less than or equal to * unencoded_len. */ const struct iovec __user *iov; /* Number of iovecs. */ unsigned long iovcnt; /* * Offset in file. * * For writes, must be aligned to the sector size of the filesystem. */ __s64 offset; /* Currently must be zero. */ __u64 flags;
/* * For reads, the following members are output parameters that will * contain the returned metadata for the encoded data. * For writes, the following members must be set to the metadata for the * encoded data. */
/* * Length of the data in the file. * * Must be less than or equal to unencoded_len - unencoded_offset. For * writes, must be aligned to the sector size of the filesystem unless * the data ends at or beyond the current end of the file. */ __u64 len; /* * Length of the unencoded (i.e., decrypted and decompressed) data. * * For writes, must be no more than 128 KiB (this limit may increase in * the future). If the unencoded data is actually longer than * unencoded_len, then it is truncated; if it is shorter, then it is * extended with zeroes. */ __u64 unencoded_len; /* * Offset from the first byte of the unencoded data to the first byte of * logical data in the file. * * Must be less than unencoded_len. */ __u64 unencoded_offset; /* * BTRFS_ENCODED_IO_COMPRESSION_* type. * * For writes, must not be BTRFS_ENCODED_IO_COMPRESSION_NONE. */ __u32 compression; /* Currently always BTRFS_ENCODED_IO_ENCRYPTION_NONE. */ __u32 encryption; /* * Reserved for future expansion. * * For reads, always returned as zero. Users should check for non-zero * bytes. If there are any, then the kernel has a newer version of this * structure with additional information that the user definition is * missing. * * For writes, must be zeroed. */ __u8 reserved[64];};
/* Data is not compressed. */#define BTRFS_ENCODED_IO_COMPRESSION_NONE 0/* Data is compressed as a single zlib stream. */#define BTRFS_ENCODED_IO_COMPRESSION_ZLIB 1/* * Data is compressed as a single zstd frame with the windowLog compression * parameter set to no more than 17. */#define BTRFS_ENCODED_IO_COMPRESSION_ZSTD 2/* * Data is compressed sector by sector (using the sector size indicated by the * name of the constant) with LZO1X and wrapped in the format documented in * fs/btrfs/lzo.c. For writes, the compression sector size must match the * filesystem sector size. */#define BTRFS_ENCODED_IO_COMPRESSION_LZO_4K 3#define BTRFS_ENCODED_IO_COMPRESSION_LZO_8K 4#define BTRFS_ENCODED_IO_COMPRESSION_LZO_16K 5#define BTRFS_ENCODED_IO_COMPRESSION_LZO_32K 6#define BTRFS_ENCODED_IO_COMPRESSION_LZO_64K 7#define BTRFS_ENCODED_IO_COMPRESSION_TYPES 8
/* Data is not encrypted. */#define BTRFS_ENCODED_IO_ENCRYPTION_NONE 0#define BTRFS_ENCODED_IO_ENCRYPTION_TYPES 1
/* * Wait for subvolume cleaning process. This queries the kernel queue and it * can change between the calls. * * - FOR_ONE - specify the subvolid * - FOR_QUEUED - wait for all currently queued * - COUNT - count number of queued * - PEEK_FIRST - read which is the first in the queue (to be cleaned or being * cleaned already), or 0 if the queue is empty * - PEEK_LAST - read the last subvolid in the queue, or 0 if the queue is empty */struct btrfs_ioctl_subvol_wait { __u64 subvolid; __u32 mode; __u32 count;};
#define BTRFS_SUBVOL_SYNC_WAIT_FOR_ONE (0)#define BTRFS_SUBVOL_SYNC_WAIT_FOR_QUEUED (1)#define BTRFS_SUBVOL_SYNC_COUNT (2)#define BTRFS_SUBVOL_SYNC_PEEK_FIRST (3)#define BTRFS_SUBVOL_SYNC_PEEK_LAST (4)
/* Error codes as returned by the kernel */enum btrfs_err_code { BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET = 1, BTRFS_ERROR_DEV_RAID10_MIN_NOT_MET, BTRFS_ERROR_DEV_RAID5_MIN_NOT_MET, BTRFS_ERROR_DEV_RAID6_MIN_NOT_MET, BTRFS_ERROR_DEV_TGT_REPLACE, BTRFS_ERROR_DEV_MISSING_NOT_FOUND, BTRFS_ERROR_DEV_ONLY_WRITABLE, BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS, BTRFS_ERROR_DEV_RAID1C3_MIN_NOT_MET, BTRFS_ERROR_DEV_RAID1C4_MIN_NOT_MET,};
/* Flags for struct btrfs_ioctl_get_csums_entry::type. */#define BTRFS_GET_CSUMS_HAS_CSUMS (1U << 0)#define BTRFS_GET_CSUMS_ZEROED (1U << 1)#define BTRFS_GET_CSUMS_NODATASUM (1U << 2)#define BTRFS_GET_CSUMS_COMPRESSED (1U << 3)#define BTRFS_GET_CSUMS_ENCRYPTED (1U << 4)#define BTRFS_GET_CSUMS_INLINE (1U << 5)
struct btrfs_ioctl_get_csums_entry { /* File offset of this range. */ __u64 offset; /* Length in bytes. */ __u64 length; /* One of BTRFS_GET_CSUMS_* types. */ __u32 type; /* Padding, must be 0. */ __u32 reserved;};
struct btrfs_ioctl_get_csums_args { /* In/out: file offset in bytes. */ __u64 offset; /* In/out: range length in bytes. */ __u64 length; /* In/out: buffer capacity / bytes written. */ __u64 buf_size; /* In: flags, must be 0 for now. */ __u64 flags; /* Out: entries of type btrfs_ioctl_get_csums_entry + csum data */ __u8 buf[];};
/* Flags for IOC_SHUTDOWN, must match XFS_FSOP_GOING_FLAGS_* flags. */#define BTRFS_SHUTDOWN_FLAGS_DEFAULT 0x0#define BTRFS_SHUTDOWN_FLAGS_LOGFLUSH 0x1#define BTRFS_SHUTDOWN_FLAGS_NOLOGFLUSH 0x2#define BTRFS_SHUTDOWN_FLAGS_LAST 0x3
#define BTRFS_IOC_SNAP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 1, \ struct btrfs_ioctl_vol_args)#define BTRFS_IOC_DEFRAG _IOW(BTRFS_IOCTL_MAGIC, 2, \ struct btrfs_ioctl_vol_args)#define BTRFS_IOC_RESIZE _IOW(BTRFS_IOCTL_MAGIC, 3, \ struct btrfs_ioctl_vol_args)#define BTRFS_IOC_SCAN_DEV _IOW(BTRFS_IOCTL_MAGIC, 4, \ struct btrfs_ioctl_vol_args)#define BTRFS_IOC_FORGET_DEV _IOW(BTRFS_IOCTL_MAGIC, 5, \ struct btrfs_ioctl_vol_args)/* trans start and trans end are dangerous, and only for * use by applications that know how to avoid the * resulting deadlocks */#define BTRFS_IOC_TRANS_START _IO(BTRFS_IOCTL_MAGIC, 6)#define BTRFS_IOC_TRANS_END _IO(BTRFS_IOCTL_MAGIC, 7)#define BTRFS_IOC_SYNC _IO(BTRFS_IOCTL_MAGIC, 8)
#define BTRFS_IOC_CLONE _IOW(BTRFS_IOCTL_MAGIC, 9, int)#define BTRFS_IOC_ADD_DEV _IOW(BTRFS_IOCTL_MAGIC, 10, \ struct btrfs_ioctl_vol_args)#define BTRFS_IOC_RM_DEV _IOW(BTRFS_IOCTL_MAGIC, 11, \ struct btrfs_ioctl_vol_args)#define BTRFS_IOC_BALANCE _IOW(BTRFS_IOCTL_MAGIC, 12, \ struct btrfs_ioctl_vol_args)
#define BTRFS_IOC_CLONE_RANGE _IOW(BTRFS_IOCTL_MAGIC, 13, \ struct btrfs_ioctl_clone_range_args)
#define BTRFS_IOC_SUBVOL_CREATE _IOW(BTRFS_IOCTL_MAGIC, 14, \ struct btrfs_ioctl_vol_args)#define BTRFS_IOC_SNAP_DESTROY _IOW(BTRFS_IOCTL_MAGIC, 15, \ struct btrfs_ioctl_vol_args)#define BTRFS_IOC_DEFRAG_RANGE _IOW(BTRFS_IOCTL_MAGIC, 16, \ struct btrfs_ioctl_defrag_range_args)#define BTRFS_IOC_TREE_SEARCH _IOWR(BTRFS_IOCTL_MAGIC, 17, \ struct btrfs_ioctl_search_args)#define BTRFS_IOC_TREE_SEARCH_V2 _IOWR(BTRFS_IOCTL_MAGIC, 17, \ struct btrfs_ioctl_search_args_v2)#define BTRFS_IOC_INO_LOOKUP _IOWR(BTRFS_IOCTL_MAGIC, 18, \ struct btrfs_ioctl_ino_lookup_args)#define BTRFS_IOC_DEFAULT_SUBVOL _IOW(BTRFS_IOCTL_MAGIC, 19, __u64)#define BTRFS_IOC_SPACE_INFO _IOWR(BTRFS_IOCTL_MAGIC, 20, \ struct btrfs_ioctl_space_args)#define BTRFS_IOC_START_SYNC _IOR(BTRFS_IOCTL_MAGIC, 24, __u64)#define BTRFS_IOC_WAIT_SYNC _IOW(BTRFS_IOCTL_MAGIC, 22, __u64)#define BTRFS_IOC_SNAP_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 23, \ struct btrfs_ioctl_vol_args_v2)#define BTRFS_IOC_SUBVOL_CREATE_V2 _IOW(BTRFS_IOCTL_MAGIC, 24, \ struct btrfs_ioctl_vol_args_v2)#define BTRFS_IOC_SUBVOL_GETFLAGS _IOR(BTRFS_IOCTL_MAGIC, 25, __u64)#define BTRFS_IOC_SUBVOL_SETFLAGS _IOW(BTRFS_IOCTL_MAGIC, 26, __u64)#define BTRFS_IOC_SCRUB _IOWR(BTRFS_IOCTL_MAGIC, 27, \ struct btrfs_ioctl_scrub_args)#define BTRFS_IOC_SCRUB_CANCEL _IO(BTRFS_IOCTL_MAGIC, 28)#define BTRFS_IOC_SCRUB_PROGRESS _IOWR(BTRFS_IOCTL_MAGIC, 29, \ struct btrfs_ioctl_scrub_args)#define BTRFS_IOC_DEV_INFO _IOWR(BTRFS_IOCTL_MAGIC, 30, \ struct btrfs_ioctl_dev_info_args)#define BTRFS_IOC_FS_INFO _IOR(BTRFS_IOCTL_MAGIC, 31, \ struct btrfs_ioctl_fs_info_args)#define BTRFS_IOC_BALANCE_V2 _IOWR(BTRFS_IOCTL_MAGIC, 32, \ struct btrfs_ioctl_balance_args)#define BTRFS_IOC_BALANCE_CTL _IOW(BTRFS_IOCTL_MAGIC, 33, int)#define BTRFS_IOC_BALANCE_PROGRESS _IOR(BTRFS_IOCTL_MAGIC, 34, \ struct btrfs_ioctl_balance_args)#define BTRFS_IOC_INO_PATHS _IOWR(BTRFS_IOCTL_MAGIC, 35, \ struct btrfs_ioctl_ino_path_args)#define BTRFS_IOC_LOGICAL_INO _IOWR(BTRFS_IOCTL_MAGIC, 36, \ struct btrfs_ioctl_logical_ino_args)#define BTRFS_IOC_SET_RECEIVED_SUBVOL _IOWR(BTRFS_IOCTL_MAGIC, 37, \ struct btrfs_ioctl_received_subvol_args)#define BTRFS_IOC_SEND _IOW(BTRFS_IOCTL_MAGIC, 38, struct btrfs_ioctl_send_args)#define BTRFS_IOC_DEVICES_READY _IOR(BTRFS_IOCTL_MAGIC, 39, \ struct btrfs_ioctl_vol_args)#define BTRFS_IOC_QUOTA_CTL _IOWR(BTRFS_IOCTL_MAGIC, 40, \ struct btrfs_ioctl_quota_ctl_args)#define BTRFS_IOC_QGROUP_ASSIGN _IOW(BTRFS_IOCTL_MAGIC, 41, \ struct btrfs_ioctl_qgroup_assign_args)#define BTRFS_IOC_QGROUP_CREATE _IOW(BTRFS_IOCTL_MAGIC, 42, \ struct btrfs_ioctl_qgroup_create_args)#define BTRFS_IOC_QGROUP_LIMIT _IOR(BTRFS_IOCTL_MAGIC, 43, \ struct btrfs_ioctl_qgroup_limit_args)#define BTRFS_IOC_QUOTA_RESCAN _IOW(BTRFS_IOCTL_MAGIC, 44, \ struct btrfs_ioctl_quota_rescan_args)#define BTRFS_IOC_QUOTA_RESCAN_STATUS _IOR(BTRFS_IOCTL_MAGIC, 45, \ struct btrfs_ioctl_quota_rescan_args)#define BTRFS_IOC_QUOTA_RESCAN_WAIT _IO(BTRFS_IOCTL_MAGIC, 46)#define BTRFS_IOC_GET_FSLABEL FS_IOC_GETFSLABEL#define BTRFS_IOC_SET_FSLABEL FS_IOC_SETFSLABEL#define BTRFS_IOC_GET_DEV_STATS _IOWR(BTRFS_IOCTL_MAGIC, 52, \ struct btrfs_ioctl_get_dev_stats)#define BTRFS_IOC_DEV_REPLACE _IOWR(BTRFS_IOCTL_MAGIC, 53, \ struct btrfs_ioctl_dev_replace_args)#define BTRFS_IOC_FILE_EXTENT_SAME _IOWR(BTRFS_IOCTL_MAGIC, 54, \ struct btrfs_ioctl_same_args)#define BTRFS_IOC_GET_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ struct btrfs_ioctl_feature_flags)#define BTRFS_IOC_SET_FEATURES _IOW(BTRFS_IOCTL_MAGIC, 57, \ struct btrfs_ioctl_feature_flags[2])#define BTRFS_IOC_GET_SUPPORTED_FEATURES _IOR(BTRFS_IOCTL_MAGIC, 57, \ struct btrfs_ioctl_feature_flags[3])#define BTRFS_IOC_RM_DEV_V2 _IOW(BTRFS_IOCTL_MAGIC, 58, \ struct btrfs_ioctl_vol_args_v2)#define BTRFS_IOC_LOGICAL_INO_V2 _IOWR(BTRFS_IOCTL_MAGIC, 59, \ struct btrfs_ioctl_logical_ino_args)#define BTRFS_IOC_GET_SUBVOL_INFO _IOR(BTRFS_IOCTL_MAGIC, 60, \ struct btrfs_ioctl_get_subvol_info_args)#define BTRFS_IOC_GET_SUBVOL_ROOTREF _IOWR(BTRFS_IOCTL_MAGIC, 61, \ struct btrfs_ioctl_get_subvol_rootref_args)#define BTRFS_IOC_INO_LOOKUP_USER _IOWR(BTRFS_IOCTL_MAGIC, 62, \ struct btrfs_ioctl_ino_lookup_user_args)#define BTRFS_IOC_SNAP_DESTROY_V2 _IOW(BTRFS_IOCTL_MAGIC, 63, \ struct btrfs_ioctl_vol_args_v2)#define BTRFS_IOC_ENCODED_READ _IOR(BTRFS_IOCTL_MAGIC, 64, \ struct btrfs_ioctl_encoded_io_args)#define BTRFS_IOC_ENCODED_WRITE _IOW(BTRFS_IOCTL_MAGIC, 64, \ struct btrfs_ioctl_encoded_io_args)#define BTRFS_IOC_SUBVOL_SYNC_WAIT _IOW(BTRFS_IOCTL_MAGIC, 65, \ struct btrfs_ioctl_subvol_wait)#define BTRFS_IOC_GET_CSUMS _IOWR(BTRFS_IOCTL_MAGIC, 66, \ struct btrfs_ioctl_get_csums_args)
/* Shutdown ioctl should follow XFS's interfaces, thus not using btrfs magic. */#define BTRFS_IOC_SHUTDOWN _IOR('X', 125, __u32)
#ifdef __cplusplus}#endif
#endif /* _UAPI_LINUX_BTRFS_H */